HR Solutions That Fit Your Business Needs

Outsourced HR with the ASO Model: Flexible, Scalable SMB Solutions

Running a growing business often means managing people, payroll, benefits, and compliance—while juggling a dozen other priorities. That’s where an Administrative Services Organization (ASO) comes in. ASOs provide outsourced HR services that give you expert support without the co-employment risks of a PEO. From payroll processing and benefits administration to employee handbook creation and HR compliance audits, the ASO model helps small and mid-sized businesses stay compliant, improve efficiency, and focus on growth.

two hr people considering an Administrative Services Organization ASO for their business

What is the ASO Model?

The ASO model—short for Administrative Services Organization—is a flexible approach to HR outsourcing that allows you to maintain full control of your business while outsourcing time-consuming administrative tasks. Unlike a Professional Employer Organization (PEO), ASOs do not become the employer of record, meaning you keep control over hiring, firing, benefits decisions, and employee relationships.

ASOs typically offer a modular service menu, so you can select only what your team needs:

  • Benefits administration

  • Payroll processing

  • HR compliance support

  • Employee documentation and policy management

  • Vendor negotiations and risk reduction

This model is ideal for companies that want strategic HR support without co-employment or loss of autonomy.

Understanding the ASO Services Model

The Administrative Services Organization (ASO) model provides businesses with hands-on HR support and strategic workforce management. Designed to save time and resources, this model helps companies adapt to evolving HR demands while staying compliant.

How the ASO Model Supports Your Business

For many small and mid-sized businesses, HR expertise is often limited to daily operations. However, HR administration requires specialized knowledge to remain effective. Beyond HR consulting, our ASO services bridge this gap by offering tailored HR solutions that support your workforce and business growth.

Flexible HR Services on Demand

With the ASO model, Soteria HR partners with your company to deliver customized HR services. Employers can select from a range of services, allowing for a personalized approach to HR management. This structure mirrors many business process outsourcing models, ensuring a seamless and efficient HR experience.

Cost Savings and Strategic Partnerships

One of the biggest advantages of the ASO model is its ability to reduce costs and improve vendor management. Through established partnerships, Soteria HR helps businesses negotiate better rates and streamline vendor coordination. Instead of managing multiple HR vendors, businesses gain one trusted partner to oversee all essential HR functions.

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The Administrative Services Organization (ASO) model reflects a higher level of engagement with clients of Soteria HR. The ASO model saves business owners time and money by tailoring services to a client company’s specific needs. The knowledge and capabilities of small and mid-sized businesses are oftentimes limited to operational expertise as opposed to HR administrative expertise. Beyond HR consulting, our ASO services help to fill that gap.

With the ASO services model, Soteria HR contracts with your company to provide administrative and human resources services. An ASO partnership allows employers to pick and choose from a number of the services we offer, thus addressing their specific needs from an a la carte menu of available services. This service model is similar to many other business process outsourcing and vendor/client relationships.

A significant advantage of choosing the ASO services model for your small to mid-sized company are the cost saving techniques and bargaining abilities that Soteria HR can provide through vendor relationships. With the ASO model, a business that feels overwhelmed by having to manage multiple vendors gets one partner to take on that task. Soteria HR manages most of the HR-oriented vendors of our client companies.

ASO Model Vs. PEO Option: Which is Right for You?

Knowing the differences between an Administrative Services Organization (ASO) and a Professional Employer Organization is crucial when selecting the best HR model for your company.

Key Differences Between ASO and PEO

Unlike a PEO, the ASO model does not involve co-employment. This means that businesses retain full employer control while still benefiting from HR outsourcing services. Additionally, Soteria HR assumes no direct employment liability, ensuring you remain the legal employer of record.

Choosing the Right HR Model for Your Business

The main distinction between ASO and PEO lies in service delivery. The ASO model functions as a traditional vendor-client relationship, offering HR expertise without employment liability. PEO solutions include co-employment, meaning the provider shares legal responsibilities.

 

Feature

ASO (Administrative Services Organization)

PEO (Professional Employer Organization)

Employer of Record

You (business retains control)

Shared (PEO becomes co-employer)

Liability

You maintain full employment liability

PEO shares employment liability

HR Services Offered

Customizable: payroll, benefits, HR compliance, etc.

Bundled: includes full-service HR + co-employment

Flexibility

High – pick only what you need

Lower – bundled services

Best For

10–250 employee SMBs that want expert support without risk

Startups or companies needing a full offload

Frequently Asked Questions About ASO HR Services

Q: What is the difference between ASO and PEO?

A: An Administrative Services Organization (ASO) offers outsourced HR services like payroll processing, benefits administration, and compliance support—without becoming your co-employer. You stay the legal employer of record, maintaining full control over hiring, firing, and company culture. In contrast, a Professional Employer Organization (PEO) enters a co-employment arrangement, sharing employment liability and responsibilities with your business. If you want flexible HR support without giving up control, the ASO model is often the better choice for small and mid-sized companies.

Q: What size business is the ASO model best for?

A: The ASO model is ideal for small to mid-sized businesses (10–250 employees) that need professional HR support but aren’t ready to build a full in-house HR team. It works especially well for companies scaling quickly across multiple states, or those dealing with increasingly complex HR tasks like multi-state compliance, employee handbooks, or benefits administration. ASOs provide a right-sized, cost-effective solution that grows with your business.

Q: Can ASO services be customized?

A: Yes—Soteria HR’s ASO services are fully customizable to fit your unique business needs. Whether you need help with just payroll processing, or a full suite including HR administration, employee policy support, benefits package setup, and compliance audits, we tailor our services to your growth stage, industry, and goals. This flexibility ensures that you only pay for the HR support you actually need—nothing more, nothing less.

Q: What HR functions can be outsourced through an ASO?

Through the ASO model, businesses can outsource a wide range of HR functions, including:

  • Employee onboarding and offboarding

  • Payroll and tax filings

  • HR policy creation and updates

  • Health insurance and benefits administration

  • Performance management systems

  • Workers compensation coordination

This gives business owners more time to focus on growth, while reducing risk and ensuring HR compliance.

Q: ASO vs. PEO – Which is better for my business?

The right choice between an ASO (Administrative Services Organization) and a PEO (Professional Employer Organization) depends on your business goals, size, and how much control you want to retain.

  • Choose an ASO if you want to keep full control over your employees, remain the legal employer of record, and only need help managing HR tasks like payroll, benefits, compliance, and employee documentation. ASOs are a great fit for growing SMBs (10–250 employees) that want scalable HR support without co-employment obligations.

  • Choose a PEO if you’re a startup or small business that prefers to outsource almost all HR responsibilities—including becoming the co-employer. A PEO will handle payroll, taxes, benefits, and some compliance tasks, but they also share control over employment decisions, which may not suit every business.

If you want flexibility, vendor control, and legal clarity—ASO is the better choice. If you want an all-in-one solution and are comfortable with shared legal responsibility, a PEO might make sense.

Pro tip: Many businesses start with an ASO and graduate to a PEO—or vice versa—depending on growth and risk tolerance.

Explore Our Administrative Services Organization (ASO) Services

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HR Administration

We handle the day-to-day HR tasks that keep your business running smoothly. From new employee onboarding and personnel file management to policy creation and employee handbook updates, our HR administration services reduce your administrative workload and minimize compliance risk. Focus on your business while we manage the details.

HR Consulting Team
HR Consulting

Gain access to senior-level HR expertise without adding to your headcount. Our consultants advise on organizational structure, performance management, workforce planning, and employee relations. Whether you’re managing rapid growth or navigating change, we provide strategic HR insights to help your team thrive.

Benefits Administration HR Team Member on Laptop
Benefits Administration

We manage your employee benefits program—from cost-effective benefit plans to open enrollment, carrier coordination, and compliance with ACA, ERISA, and COBRA. Our services also cover health insurance, workers compensation, and dependent eligibility verification to keep your offerings competitive and compliant.

Payroll Processing Woman at Computer Soteria HR
Payroll Processing

Ensure accurate, on-time payroll with expert handling of wage calculations, tax filings, direct deposits, and year-end reporting (W-2s, 1099s). We integrate with your existing payroll system or provide turnkey support, helping you avoid costly errors and stay current with evolving payroll compliance requirements across all jurisdictions.

Discovering the Right HR Solutions for You

If you’re unsure which HR model best suits your company’s needs, we’re here to help. Whether you’re exploring the ASO model or looking for tailored HR outsourcing solutions, Soteria HR will guide you every step of the way.